A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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networking: make skb_push & __skb_push return void pointers

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It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.

Make these functions return void * and remove all the casts across
the tree, adding a (u8 *) cast only where the unsigned char pointer
was used directly, all done with the following spatch:

    @@
    expression SKB, LEN;
    typedef u8;
    identifier fn = { skb_push, __skb_push, skb_push_rcsum };
    @@
    - *(fn(SKB, LEN))
    + *(u8 *)fn(SKB, LEN)

    @@
    expression E, SKB, LEN;
    identifier fn = { skb_push, __skb_push, skb_push_rcsum };
    type T;
    @@
    - E = ((T *)(fn(SKB, LEN)))
    + E = fn(SKB, LEN)

    @@
    expression SKB, LEN;
    identifier fn = { skb_push, __skb_push, skb_push_rcsum };
    @@
    - fn(SKB, LEN)[0]
    + *(u8 *)fn(SKB, LEN)

Note that the last part there converts from push(...)[0] to the
more idiomatic *(u8 *)push(...).

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Johannes Berg 2017-06-16 14:29:23 +02:00 • committed by David S. Miller
commit d58ff35122
126 changed files with 204 additions and 234 deletions
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2
drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
View file

@ -354,7 +354,7 @@ static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb,
struct l2t_entry *l2t = csk->l2t;
skb_reset_transport_header(skb);
req = (struct tx_data_wr *)__skb_push(skb, sizeof(*req));
req = __skb_push(skb, sizeof(*req));
req->wr_hi = htonl(V_WR_OP(FW_WROPCODE_OFLD_TX_DATA) |
(req_completion ? F_WR_COMPL : 0));
req->wr_lo = htonl(V_WR_TID(csk->tid));

2
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
View file

@ -644,7 +644,7 @@ static inline void make_tx_data_wr(struct cxgbi_sock *csk, struct sk_buff *skb,
unsigned int wr_ulp_mode = 0, val;
bool imm = is_ofld_imm(skb);
req = (struct fw_ofld_tx_data_wr *)__skb_push(skb, sizeof(*req));
req = __skb_push(skb, sizeof(*req));
if (imm) {
req->op_to_immdlen = htonl(FW_WR_OP_V(FW_OFLD_TX_DATA_WR) |

2
drivers/scsi/fcoe/fcoe_ctlr.c
View file

@ -626,7 +626,7 @@ static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, struct fc_lport *lport,
fh = (struct fc_frame_header *)skb->data;
op = *(u8 *)(fh + 1);
dlen = sizeof(struct fip_encaps) + skb->len; /* len before push */
cap = (struct fip_encaps_head *)skb_push(skb, sizeof(*cap));
cap = skb_push(skb, sizeof(*cap));
memset(cap, 0, sizeof(*cap));
if (lport->point_to_multipoint) {

7
drivers/scsi/fnic/fnic_fcs.c
View file

@ -1000,8 +1000,7 @@ void fnic_eth_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
if (!fnic->vlan_hw_insert) {
eth_hdr = (struct ethhdr *)skb_mac_header(skb);
vlan_hdr = (struct vlan_ethhdr *)skb_push(skb,
sizeof(*vlan_hdr) - sizeof(*eth_hdr));
vlan_hdr = skb_push(skb, sizeof(*vlan_hdr) - sizeof(*eth_hdr));
memcpy(vlan_hdr, eth_hdr, 2 * ETH_ALEN);
vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
vlan_hdr->h_vlan_encapsulated_proto = eth_hdr->h_proto;
@ -1067,7 +1066,7 @@ static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
if (!fnic->vlan_hw_insert) {
eth_hdr_len = sizeof(*vlan_hdr) + sizeof(*fcoe_hdr);
vlan_hdr = (struct vlan_ethhdr *)skb_push(skb, eth_hdr_len);
vlan_hdr = skb_push(skb, eth_hdr_len);
eth_hdr = (struct ethhdr *)vlan_hdr;
vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
vlan_hdr->h_vlan_encapsulated_proto = htons(ETH_P_FCOE);
@ -1075,7 +1074,7 @@ static int fnic_send_frame(struct fnic *fnic, struct fc_frame *fp)
fcoe_hdr = (struct fcoe_hdr *)(vlan_hdr + 1);
} else {
eth_hdr_len = sizeof(*eth_hdr) + sizeof(*fcoe_hdr);
eth_hdr = (struct ethhdr *)skb_push(skb, eth_hdr_len);
eth_hdr = skb_push(skb, eth_hdr_len);
eth_hdr->h_proto = htons(ETH_P_FCOE);
fcoe_hdr = (struct fcoe_hdr *)(eth_hdr + 1);
}

3
drivers/scsi/qedf/qedf_fip.c
View file

@ -125,8 +125,7 @@ void qedf_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
sub = fiph->fip_subcode;
if (!qedf->vlan_hw_insert) {
vlan_hdr = (struct vlan_ethhdr *)skb_push(skb, sizeof(*vlan_hdr)
- sizeof(*eth_hdr));
vlan_hdr = skb_push(skb, sizeof(*vlan_hdr) - sizeof(*eth_hdr));
memcpy(vlan_hdr, eth_hdr, 2 * ETH_ALEN);
vlan_hdr->h_vlan_proto = htons(ETH_P_8021Q);
vlan_hdr->h_vlan_encapsulated_proto = eth_hdr->h_proto;